【答案解析】[听力原文] 19-20
W: Hi, Bill, you look happy.
M: Yes, I've just seen a very funny film on TV.
W: What was it about?
M: It was about a careless man who got into trouble wherever he went. He couldn't do anything right.
W: So you like it?
M: Yes, I do. It made me laugh a lot.
W: But I'd rather see something not only interesting but also instructive.
M: Oh, Jane, don't be so serious. People sometimes need relaxation.
W: That's true. But I just think that watching TV is not just for entertainment.
[精解] 题干问：“关于比尔我们知道些什么?”听对话可知比尔看了一个有趣的电视节目，而且他很喜欢看，所以答案C“他喜欢他已做的事情。”符合题意。